*{
    padding: 0;
    margin: 0;
    list-style: none;
    text-decoration: none;
}
.content{
    width: 1903px;
    margin: auto;
    overflow: hidden;
}
iframe{
    width: 1920px;
    height: 900px;
}
img{
    vertical-align: bottom;
}
.tit{
    width: 1300px;
    margin: auto;
}
.titUl{
    width: 100%;
    display: inline-block;
}
.titUl::after{
    content:'';
    display:block;
    clear:both;
}
.titUl > li{
    float: left;
    width: 50px;
    line-height: 39px;
    margin-left: 40px;
}
.titUl > li:nth-of-type(1){
    width: 100px;
    margin-left: 0;
}
.titUl > li:nth-of-type(7){
    float: right;
    width: max-content;
    margin: 0px;
}
.titUl > li:nth-of-type(8){
    float: right;
    width: max-content;
    margin-right: 40px;
    margin-left: 0px;
}
.titUl > li > img{
    width: 100px;
    vertical-align: bottom;
}
#serach{
    width: 30px;
}
.titUl button{
    color: #000;
    width: 50px;
    height: 40px;
    border: none;
    background-color: #FFF;
    font-size: 16px;
    cursor: pointer;
}
#register{
    border: 1px solid orange;
    border-radius: 3px;  
    padding: 6px;
    height: 35px;
    color: orange;
}